Electric shaver



Oct. 21, 1941.

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; INVENTOR JOHN HAYS HAMMOND,JR.

ATO EY ELECTRIC SHAVER Filed July e, 1938 3 Sheets-Sheet 3 m. may. ROY E m, 3. an, m. my 7 NB A a n V V //F & 7 M .\\M 5 H 5\\ w 8 8 6 6 6 Patented Oct 21, 1941 UNITED STAT Emc'mro SII AVER- John Hays Hammond, Jr., Gloucester, Mass. Application July 6, 1938 Serial No. 217,643

'7 Claims. v

Thisinvention relates toelectric shavers of the type having an outer comb member provided with apertures through which the hairs extend and an inner vibrating orrotatingcutter member which cooperates therewith.

An object of the invention proved operating characteristics.

Various other objects and advantages will be apparent as the nature of the invention is more fully disclosed.

Although the novel features which are believed to be characteristic of this invention will be particularly, pointed outin the claims appended hereto, the inventionitslf maybe better understood by referring to the following description, taken in connection with the accompanying drawings, in which certain specific embodiments thereof have beenset forth for purposes of illustration.

In the drawings:

Fig. 1 is a fragmentary front elevation, partly in section, of an electricshaver head embodying the present invention;

Fig. 2 is a section throughthe shaver taken on the line 2-2 of Fig. P,

Fig. 3 is afragmentary section taken on the line 3-3 ofFig. 1;- a 1 n Fig. 4 is a fragmentary front elevation, partly in section, of a modified form of the invention; Fig. 5 is a section taken on line 5-5 of Fig. 4 Fig. 6 is a fragmentary front elevation, partin in section, of another modified form of the invention; and

Fig. 7'is a section taken on line ,'I-I of Fig. 6. In the following descriptionand in the claims certain specific terms are used for convenience in referring to various details of the invention. These terms, however, are to be given as broad an interpretation as the state of the art will permit.

Referring to the drawings'and more particularly to Figs. 1 to 3, the invention is shown as applied toan electric shaver having a housing H which :may be made of suitable insulating material, preferably of a plastic composition such as a phenol condensation product. The "housing."

contains a motor l2which may be of any convenient type. This motor, for ,example, may be of the brush type or may be of the make-andbreak type. In any event; the motor is suitably supported within thehousing ll" and drives a shaft l3 which extendslongitudinally of the cutter and carries a head connecting rod l5,-drlves a blade holder N, which n is Qiprovide a shaver ofthe above type having novel and imwhich, by means of a is 'rotatably mounted on a shaft H. A cutting blade I8 is positioned in the blade holder l6 and may be pressed against a semicircular comb 20 by means of a spring not shown.

5 be provided with a plurality of apertures 2| through which the individual-bristles of the beard The apertures'Zl are shown as circular in form. It'is to be understood,.however, that these apertures may take are adapted to extend.

1-0 the form of elongated slots which may extend either axially or peripherally of comprise a I combination of round apertures adapted to receive individual hairs and elongated slots through which one or more hairs may extend. The elongated slots may, in certain in-- stances, provide means for cutting hairs which are too long to extend through the round apertures. These features, however, are well known in the art and are accordingly not shown in detail in the drawings. I I In the embodiment shown, the comb 20 is circular in section and is attached to end brackets 22 which are pivotally mounted on the shaft ll andare adapted to permit a limited amount of 25 rotational movement of the comb. One of the brackets 22 is'shown as provided with an arm 26 which extends downwardly therefrom and is provided atits end with an elongated slot 25 which is engaged by pin 26 carried by a rotating 30 head 21. The head 21 is mounted on a shaft 28 which carries a worm gear 29, driven by'a suitble worm 3B which is mounted on the shaft [3 and is rotated by the motor l2, the arrangement being such that rotation of the head 21 causes an oscillating movement .of the arm'24 and of the comb 20.

In the operation of this device, rotation of the motor l2 drives the shaft l3'and, through the- I head I and connecting rod l5, causes the cut- 0 ting blade 18 to oscillate at a comparatively rapid rate. Rotation of the shaft l3, through the worm 30 and the worm gear 29, drives the arm 24 and causes the comb 20 to oscillate at a slower rate of speed. This oscillation of the comb 20 causes the apertures 2| tobe shifted over the beard in such a way that the various hairs are caused to extend therethrough. In this way a clean and uniform cut is obtained with a minimum number of manual strokes. It is to be understood that the various apertures 21 are offset so as to engage a maximum number of hairs at each operation. This, in combination with the oscillation of the comb, produces a satisfactory shave with a minimum amount of effort on the part of the operator.

This comb 20 may the comb or may are slidably mounted on the rod l1 and on the lower ends of which are mounted pins 36. These pins engage, slots 31 provided in two arms 38 which are pivotally mounted on a bracket 39.

The two arms 38 are also provided with elongated slots 4|! which are engaged by two pins 4| carried by two rotating heads 42. The heads 42 are mounted on a shaft 43 which carries a worm gear 45. The worm gear 45 is driven by a worm 46 which is mounted on the shaft II of the motor l2. l x

In the operation of themodified form of the invention shown in Figs. 4 and 5, the motor I: drives the cutting blade as already described and also the worm 48 which, by means of'the worm gear 4!; and shaft 43, causes rotation of the heads 42 and pins 4L, This in turn causes an oscillation of the arms 38 which by means of the pins 38 causes an up and down motion of the brackets 35 and comb 20. In this way the comb 20 vibrates in a plane substantially perpendicular to the surf-ace of the skin thus facilitating the entrance of the hairs into the apertures 2| and also causing the comb 20 to be pressed against the skin in such a way that thehairs will be clipped very close to the surface of the skin giving an extremely close shave.

Referring to the form of the invention shown in Figs. 6 and .7 a housing 50 is shown in whichis mounted a motor 5| provided with a shaft 52.

Secured to one end of this shaft is an eccentric 53 which engages a slot 55 in an arm 58. The arm 58 is secured to a sleeve 51 which is rotatably mounted on a shaft 58 which'in turn is rotatably mounted in the housing '50. 'Secured to the sleeve 51 is a second arm 59 the upper end of which engages a cutter 60 provided with suitable slots 6|. The cutter 60 is slidably mounted in a comb 62 which is provided with slots 63. The comb 62 forms part of a D shaped member 65 which is slidably mounted for up and down motion in slots 66 .provided in the housing 50.

Two ,rods 81 are provided with collars 88 and lit loosely in holes in the member 85. The upper ends of the rods 81 are pressed against the under side ofthe cutter 60 by means of compression springs 69 mounted between the collars 88 and the member 65 and tend to hold the cutter 60 against the comb 62.

Secured ,to the other 'end of the shaft-52 of the motor 5| is a pinion H which meshes with a gear 12. The gear 12 is secured to the shaft 58 to which is fastened an eccentric 13. This eccentric rotates in a slot provided in the member 65. 1

In the operation of the modified form of. the invention shown in Figs. 6 and 7 the motor 5| rotates the eccentric 53 which imparts an oscillatory motion to the arm 56 and, by means of the sleeve 51, to the arm 59. This motion is transmitted to the cutter 60 which slides rapidly back and forth in the comb 82, thus clipping the hairs of the beard which project through the apertures 68 in a manner well known in the art.

The motor 5| also rotates the pinion H and, by means of the gear 12, imparts a less rapid rotary motion to the eccentric It. The rotation of up and down in the slots 68 thus 'giving'a vibratory'motion to the comb 62 and cutter 8,0 which is substantially perpendicular to the surface of the skin. This vibratory motion of the comb 02 causes the hairs of the beard m be forced through the apertures l3 and be clipped ofl close to the skin by the cutter 80. In this way a much closer shave may be obtained than with the ordinary electric shaver.

It is to be understood that the comb may be oscillated axially instead of vertically as shown or may be given a movement which combines vertical, axial and pivotal movement as desired to facilitate the passage of the beard through the apertures therein and the cutting thereof.

Although only a few of the various forms in which this invention may be embodied have been shown herein, it is to be understood that the in.- vention is not limited to any specific construction but may be embodied in variousforms without departing from the spirit of the invention or the scope of the appended claims.

What is claimed is:

1. In an electric shaver. a comb member having apertures through which the hairs are adapted to extend, an oscillating cutter cooperating therewith, an electric'motor, and means actuated by said motor to cause oscillatory movement of said comb member and of said cutter at diiterent rates of speed.

2. In an electric shaver, a comb member having apertures through which the hairs are adapted to extend, an oscillating cutter cooperating therewvithmn electric motor, and means-actuated by said motor to cause oscillatory movement of said cutter at a given rate of sp ed and to cause oscillatory movement of said comb at a slower rate of speed.

3. An electric shaver of the type having a motor and a cutting member comprising an oscillating knife driven thereby, a comb positioned over said cutting member and provided with apertures toreceive the hairs for cutting by said knife, said comb, being circular in cross section and being pivotally mounted for limited oscillatory movement about its axis, and means actuated by said motor for imparting said oscillatory movement to said comb. A

4. The invention set forth in claim 3 in which the motor actuated means imparts oscillatory movement to said comb at a rate slower than that of said cutting member.

5. An electric shaver of the type having a motor and a cutting member driven thereby, a comb po sitioned over said cutting member and provided with apertures toireceive the hairs for cutting,

said comb being mounted for limited vertical oscillatory movement, and means actuated by said the eccentric 13 causes the member 65 to move motor for imparting said oscillatory movement to said comb.

6. The invention set forth in claim 5 in which the motor actuated means imparts an oscillatory movement to said comb at a slower rate than E E 3 Q L A E M E R 2,26@,11.Joim Hays Hammond, J12, Gloucester, Mass. ELECTRIC SHAVER. Patent dated October 21, 1941. Disolaimerfiled. September 11, 1942, by

the inventor. Hereby enters this disclaimer of claims 1, 2, and 7 of said patent.

{@ficiai @azeiie 1962:0667 18, 1942.] v 

